Caesian Bazzite
A variety of Bazzite
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Formula:
Be3Sc2(Si6O18)
Colour:
Sky-blue
Specific Gravity:
2.85
Crystal System:
Hexagonal
Juve & Bergstøl (1990) described a bazzite with ca. 3 weight% Cs2O from Heftetjern, Tørdal, Telemark, Norway, which they designated as a caesian bazzite.
Later, a cesian bazzite from Italy was described by Gramaccioli et al. (2000).
Later, a cesian bazzite from Italy was described by Gramaccioli et al. (2000).
Unique Identifiers
Mindat ID:
54291 (as Caesian Bazzite)
586 (as Bazzite)
586 (as Bazzite)
Long-form identifier:
mindat:1:1:54291:9 (as Caesian Bazzite)
mindat:1:1:586:1 (as Bazzite)
mindat:1:1:586:1 (as Bazzite)
Physical Properties of Caesian Bazzite
Transparency:
Translucent
Colour:
Sky-blue
Density:
2.85 g/cm3 (Measured)
Chemistry of Caesian Bazzite
Mindat Formula:
Be3Sc2(Si6O18)
Element Weights:
Elements listed:
Chemical Analysis
Oxide wt%:
| 1 | |
|---|---|
| BeO | 14.50 % |
| Sc2O3 | 14.50 % |
| Fe2O3 | 5.70 % |
| Al2O3 | 0.8 0 % |
| MgO | 0.10 % |
| MnO | 1.43 % |
| Li2O | 0.24 % |
| Na2O | 1.60 % |
| K2O | 0.13 % |
| Rb2O | 0.25 % |
| Cs2O | 2.93 % |
| SiO2 | 58.00 % |
| H2O | 1.10 % |
| Total: | 101.28 % |
Empirical formulas:
| Sample ID | Empirical Formula |
|---|---|
| 1 | Be3.1(Sc1.24Fe0.42Mn0.12Al0.10Mg0.02)1.9(Na0.30Cs0.12Li0.05Rb0.02K0.01)0.5(Si5.7Be0.3)6O18* 0.36H2O |
Sample references:
| ID | Locality | Reference | Notes |
|---|---|---|---|
| 1 | Heftetjern pegmatite, Tørdal, Drangedal, Telemark, Norway | Electron-microprobe analyses of three grains and atomic-absorption analyses of a bulk sample (average) |
Crystallography of Caesian Bazzite
Crystal System:
Hexagonal
Class (H-M):
6/mmm(6/m2/m2/m) - Dihexagonal Dipyramidal
Cell Parameters:
a = 9.549 Å, c = 9.152 Å
Ratio:
a:c = 1 : 0.958
Unit Cell V:
722.71 ų (Calculated from Unit Cell)
Epitaxial Relationships of Caesian Bazzite
Epitaxial Minerals:
| 'Beryl' | Be3Al2(Si6O18) |
Synonyms of Caesian Bazzite
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Caesian Bazzite
mindat.org URL:
https://www.mindat.org/min-54291.html
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Please feel free to link to this page.
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References for Caesian Bazzite
Localities for Caesian Bazzite
Showing 2 localities.
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
All localities listed without proper references should be considered as questionable.
Italy | |
| Gramaccioli et al. (2000) |
Norway | |
| Juve et al. (1990) |
